What This Calculator Measures
Optimize ratio rebalancing by adjusting inputs to hit a target ratio and total.
By combining practical inputs into a structured model, this calculator helps you move from vague estimation to clear planning actions you can execute consistently.
This calculator translates ratio targets into concrete A/B adjustments.
How to Use This Well
- Enter current A and B.
- Set target ratio and total.
- Choose adjustment mode.
- Review new A/B values.
- Apply changes to reach target.
Formula Breakdown
A = total × ratio ÷ (1 + ratio)Worked Example
- Total 120 with ratio 1:1 = 60/60.
- Current 40/60 needs +20 A.
- Adjust mode decides which side changes.
Interpretation Guide
| Range | Meaning | Action |
|---|---|---|
| 0–5 change | Near target. | Minor adjustment. |
| 6–15 | Moderate change. | Plan a shift. |
| 16–30 | Large change. | Stage adjustments. |
| 30+ | Major change. | Revisit constraints. |
Optimization Playbook
- Adjust both: smooth changes.
- Fix total: keep overall size stable.
- Round consistently: avoid drift.
- Check deltas: stage changes if large.
Scenario Planning
- Baseline: current ratio.
- Higher A: increase target ratio.
- Fixed total: lower total constraint.
- Decision rule: keep deltas under 15.
Common Mistakes to Avoid
- Forgetting to update total constraints.
- Using inconsistent units.
- Ignoring adjustment mode.
- Rounding too early.
Implementation Checklist
- Confirm target ratio.
- Pick adjustment mode.
- Apply deltas gradually.
- Review after changes.
Measurement Notes
Treat this calculator as a directional planning instrument. Output quality improves when your inputs are anchored to recent real data instead of one-off assumptions.
Run multiple scenarios, document what changed, and keep the decision tied to trends, not a single result snapshot.
FAQ
What is a target ratio?
It is the desired proportion between A and B.
Can I keep total fixed?
Yes, use the total constraint.
What if I can only change one side?
Use Adjust A Only or Adjust B Only.